Table 2 . Details of outcome measures at follow-up.

Variable	Description
Survival	If a patient dies during follow-up, date of death is recorded
Employment status	Whether the patient/family has a job at follow-up (full time or part time) and whether the job is the same as before ICU admission
General information	Readmission to hospital or ICU during follow-up
Health-related quality of life
SF-12	Three months after discharge, the evaluator will administer the SF-12 questionnaire to the patient or proxy by telephone. SF-12 questionnaire is a comprehensive 12-item survey of HRQOL with two summary scales, PCS and MCS, with scores ranging from 0 to 100. A higher score indicates better physical and mental functions.
Physical function/activities of daily living
Clinical frail scale	The Clinical Frailty Scale is a judgement-based frailty tool that evaluates specific domains including comorbidity, function, and cognition to generate a frailty score ranging from 1 (very fit) to 9 (terminally ill).
Nutrition assessment
MUST	The MUST score is based on three items regarding BMI (score 0–2), weight loss (score 0–2), and no nutritional intake due to acute disease (score 0–2). Based on the MUST score, patients were categorized as having a low risk (MUST score 0), medium risk (MUST score 1), or high risk (MUST score ≥2) of malnutrition [[13]].
Family- Mental component summary (SF-12)	HRQOL with two summary scales, MCS, with scores ranging from 0 to 100.

ICU; Intensive care unit, SF-12; Short Form Survey, HRQOL, Quality of life, PCS; Physical component summary, MCS; Mental component summary, MUST; Malnutrition Universal Screening Tool.